Fenazine 25 mg is a medication containing perphenazine, a typical antipsychotic drug primarily used for managing schizophrenia and controlling severe nausea and vomiting. It works by blocking dopamine receptors in the brain, which helps reduce symptoms of psychosis, such as delusions and hallucinations, and controls vomiting. Fenazine 25 mg is usually taken in divided doses, depending on the condition being treated. It can cause side effects such as drowsiness, dizziness, dry mouth, and in some cases, more serious side effects like tremors or tardive dyskinesia. It is important to use under medical supervision due to its potential side effects and need for dosage adjustments.